Here's pictures of the source and target home, taken from where cantennas
will be mounted:

We modified the 900ap's to have a secondary external antenna with a standard
BNC connector:

Here's are of the Cantennas, one was made from an Enfamil Baby formula can
and mounted on the house, the other was a Foldgers coffee can. The outside
of both cans were sprayed with Rustolium. I used this
site for the directions and created this PalmOS app
which performs the can size and probe locations just like the app on his page.
We get consistent transfers averaging 350MByte/sec when ftp'ing between houses.